Evidence map›Paper›PMID 35209875›Full record

ArticleBMC psychiatry2022

U-shaped association between sleep duration and subjective cognitive complaints in Chinese elderly: a cross-sectional study.

Li-Hua Lin, Wen-Qi Xu, Shi-Bin Wang, Qing Hu, Ping Zhang, Jia-Hao Huang, Yun-Fei Ke, Kai-Rong Ding, Cai-Lan Hou, Fu-Jun Jia

Open access · goldAbstract read
In one paragraph

Article in BMC psychiatry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. Observational
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  5. Factors Affecting Medication Adherence in Middle-Aged and Elderly Patients in China: A Cross-Sectional Study.Medical science monitor : international medical journal of experimental and clinical research · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

Li-Hua Lin *School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China.
Wen-Qi Xu *Guangdong Mental Health Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, Guangdong Province, China.
Shi-Bin WangGuangdong Mental Health Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, Guangdong Province, China. spiriorwang@126.com.
Qing HuSchool of Nursing, Southern Medical University, Guangzhou, 510515, Guangdong Province, China.
Ping ZhangSchool of Nursing, Southern Medical University, Guangzhou, 510515, Guangdong Province, China.
Jia-Hao HuangYuexiu District Center for Disease Control, Guangzhou, 510080, Guangdong Province, China.
Yun-Fei KeGuangdong Mental Health Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, Guangdong Province, China.
Kai-Rong DingGuangdong Mental Health Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, Guangdong Province, China.
Cai-Lan HouSchool of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China.
Fu-Jun JiaSchool of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China. jiafujun@gdph.org.cn.
Guangdong Provincial People's Hospital · CNGuangdong Academy of Medical Sciences · CNSouthern Medical University · CNGuangzhou Center for Disease Control and Prevention · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSubjective cognitive decline (SCD) may be the early screening signal to distinguish susceptible population with Alzheimer's disease (AD) and mild cognitive impairment (MCI). Subjective cognitive complaints (SCCs) have been proved strongly associated with SCD. This study aimed to explore the association between sleep duration and SCCs in the Chinese elderly.

methodsWe conducted a cross-sectional study involving 688 participants aged 60 years and older in Guangdong Province, China. SCCs were assessed by the Subjective Cognitive Decline questionnaire 9 (SCD-Q9), which contained 9 items with two dimensions, including the overall memory function and time comparison (OMTC) and daily activity ability (DAA). Restricted cubic splines and generalized additive model (GAM) were used to fit the association between sleep duration and SCD-Q9 score.

resultsThere were significant U-shaped associations between sleep duration and overall score of SCD-Q9 (EDF = 3.842, P < 0.001), as well as the OMTC dimension (EDF = 4.471, P < 0.001) in the age- and gender-adjusted GAM. The lowest points on the overall score of SCD-Q9 and OMTC score were observed in those sleeping 8 h per night. After further adjusting for other demographic characteristics, lifestyle behaviors, hypertension and diabetes, the U-shaped associations between sleep duration and the overall score of SCD-Q9 (EDF = 3.575, P = 0.004), sleep duration and the OMTC score (EDF = 4.478, P = 0.010) were still found. The daily activity ability (DAA) score was also non-linear associated with sleep duration both in the age- and gender-adjusted GAM (EDF = 2.314, P < 0.001) and further adjusted GAM (EDF = 2.080, P = 0.010).

conclusionsBoth longer sleep duration (> 8 h) and shorter duration (< 8 h) were linked to worse SCCs. Future studies should explore the protective effect of managing sleep duration on SCD and its progression to dementia.

Indexed as

Cognitive DysfunctionAgedChinaCognitionCross-Sectional StudiesHumansMiddle AgedNeuropsychological TestsSleepGeneralized additive modelSleep durationSubjective cognitive complaintsSubjective cognitive declineU-shaped association

Identifiers

PMID35209875
PMCPMC8867774
OpenAlexW4213452885

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.